Mitsubishi PUZ-A24NHA, PUZ-A24NHA-BS, PUZ-A30NHA, PUZ-A18NHA-BS, PUZ-A30NHA-BS Service Manual

...

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT -TYPE, AIR CONDITIONERS

Outdoor unit

SERVICE MANUAL

R410A

June 2007

No.OC367

REVISED EDITION-C

[model names]

PUZ-A18NHA PUZ-A24NHA PUZ-A30NHA PUZ-A36NHA

PUZ-A42NHA PUZ-A18NHA-BS PUZ-A24NHA-BS PUZ-A30NHA-BS PUZ-A36NHA-BS PUZ-A42NHA-BS

PUY-A12NHA PUY-A18NHA PUY-A24NHA PUY-A30NHA PUY-A36NHA PUY-A42NHA PUY-A12NHA-BS PUY-A18NHA-BS PUY-A24NHA-BS PUY-A30NHA-BS PUY-A36NHA-BS PUY-A42NHA-BS

[Service Ref.]

PUZ-A18NHA PUZ-A24NHA PUZ-A30NHA PUZ-A36NHA PUZ-A42NHA PUZ-A18NHA-BS PUZ-A24NHA-BS PUZ-A30NHA-BS PUZ-A36NHA-BS PUZ-A42NHA-BS

PUY-A12NHA PUY-A12NHA PUY-A18NHA PUY-A18NHA1 PUY-A24NHA PUY-A24NHA1 PUY-A30NHA PUY-A30NHA1 PUY-A36NHA PUY-A36NHA1 PUY-A42NHA PUY-A12NHA PUY-A18NHA PUY-A24NHA PUY-A30NHA PUY-A36NHA

1-BS 1-BS 1-BS 1-BS 1-BS

PUY-A42NHA-BS

Revision:

• “9-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES” is deleted in REVISED

EDITION-C.

• Some descriptions have been modified.

• Please void OC367 REVISED

EDITION-B.

NOTE:

• This manual describes only service data of the outdoor units.

• RoHS compliant products have <G> mark on the spec name plate.

• For servicing RoHS compliant products, refer to the RoHS PARTS LIST.

PUZ-A24/30/36NHA

PUY-A24/30/36NHA

CONTENTS

1. TECHNICAL CHANGES ·································2

2. REFERENCE MANUAL··································2

3. SAFETY PRECAUTION··································3

4. FEATURES ·····················································6

5. SPECIFICATIONS···········································7

6. DATA·······························································9

7. OUTLINES AND DIMENSIONS····················13

8. WIRING DIAGRAM·······································16

9. WIRING SPECIFICATIONS··························20

10.

REFRIGERANT SYSTEM DIAGRAM

11. TROUBLESHOOTING···································26

12. EASY MAINTENANCE FUNCTION··············81

13. FUNCTION SETTING····································84

14.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

15. DISASSEMBLY PROCEDURE ···················102

16. PARTS LIST ················································117

17. RoHS PARTS LIST ·····································126

··············23

············92

2-1. INDOOR UNIT

Model name Service Ref.

Service Manual No.

PLA-A12/18/24/30/36/42AA PLA-A12/18/24/30/36/42AA(1) OC370

PLA-A12/18/24/30/36/42BA PLA-A12/18/24/30/36/42BA

OCH420 OCB420

(Issue scheduled in July, 2007)

PCA-A24/30/36/42GA PCA-A24/30/36/42GA(1) OC368 PKA-A12/18GA PKA-A12/18GA(1)

OC369

PKA-A12/18GAL PKA-A12/18GAL(1) PKA-A24/30/36FA PKA-A24/30/36FA(1)

PKA-A24/30/36FAL PKA-A24/30/36FAL(1)

2-2. TECHNICAL DATA BOOK Manual No. OCS04

TECHNICAL CHANGES

PUY-A12NHA(-BS) ➔ PUY-A12NHA1(-BS) PUY-A18NHA(-BS) ➔ PUY-A18NHA1(-BS) PUY-A24NHA(-BS) ➔ PUY-A24NHA1(-BS) PUY-A30NHA(-BS) ➔ PUY-A30NHA

1(-BS)

PUY-A36NHA(-BS) ➔ PUY-A36NHA1(-BS)

• Controller circuit board(C.B.) has been changed.

REFERENCE MANUAL

3 SAFETY PRECAUTION

Use new refrigerant pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness.

Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

In case of using the existing pipes for R22, be careful with the followings.

· Be sure to clean the pipes and make sure that the insides of the pipes are clean.

· Change flare nut to the one provided with this product. Use a newly flared pipe.

· Avoid using thin pipes.

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Keep the tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

3-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminals, all supply circuits must be disconnected.

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Gravimeter

Unit

[1] Cautions for service

(1) Perform service after collecting the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting

·Use high-tension side pressure of 5.3MPa·G or over.

2 Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3 Electronic scale 4 Gas leak detector ·Use the detector for R134a, R407C or R410A. 5 Adaptor for reverse flow check ·Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

8 Refrigerant recovery equipment

specifications

Cylinder with syphon

3-3. CAUTIONS FOR REFRIGERANT PIPING WORK

1/4” 3/8” 1/2” 5/8” 3/4”

6.35

9.52

12.70

15.88

19.05

0.8 [1/32"]

1.0 [5/128"]

—

0.8 [1/32"]

1.0 [5/128"]

Nominal

dimensions

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

: mm [inch]

R410A R22

1/4” 3/8” 1/2” 5/8” 3/4”

6.35

9.52

12.70

15.88

19.05

9.1 [11/32-23/64]

13.2 [1/2-33/64]

16.6 [41/64-21/32]

19.7 [49/64-25/32] —

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

Unit : mm [inch]

R410A R22 1/4” 3/8” 1/2” 5/8” 3/4”

6.35

9.52

12.70

15.88

19.05

17.0 [43/64]

22.0 [7/8]

26.0 [1-3/64]

29.0 [1-9/64] —

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions

Flare nut dimensions

Outside

diameter

Dimension B

Unit : mm [inch]

R410A R22

Gauge manifold Charge hose Gas leak detector

Refrigerant recovery equipment Refrigerant cylinder Applied oil

Safety charger

Charge valve Vacuum pump

Flare tool

Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermistor vacuum gauge and vacuum valve Charging cylinder

Air purge, refrigerant charge and operation check Gas leak check

Collection of refrigerant Refrigerant charge

Apply to flared section Prevent compressor malfunction

when charging refrigerant by spraying liquid refrigerant

Prevent gas from blowing out when detaching charge hose

Vacuum drying and air purge

Flaring work of piping

Bend the pipes Cut the pipes Weld the pipes Charge refrigerant Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Charge refrigerant

Tool exclusive for R410A Tool exclusive for R410A Tool for HFC refrigerant Tool exclusive for R410A Tool exclusive for R410A Ester oil and alkylbenzene oil (minimum amount) Tool exclusive for R410A

Tool exclusive for R410A Tools for other refrigerants can

be used if equipped with adopter for reverse flow check Tools for other refrigerants can be used by adjusting flaring dimension Tools can be used for other refrigerants Tools can be used for other refrigerants Tools can be used for other refrigerants Tools can be used for other refrigerants Tools can be used for other refrigerants

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped with adopter for rever se flow)

(Usable by adjusting flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used.

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7mm [7/256 inch] or below.)

2Dimensions of flare cutting and flare nut

The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because of its working pressure is higher than that of other refrigerants. Therefore, to enhance air tightness and intensity, flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes. Use torque wrench corresponding to each dimension.

Dimension A

3Tools for R410A (The following table shows whether conventional tools can be used or not.)

Dimension B

4 FEATURES

PUZ-A18NHA PUZ-A18NHA-BS PUY-A12/18NHA PUY-A12/18NHA

PUY-A12/18NHA1-BS

PUZ-A24/30/36NHA PUZ-A24/30/36NHA-BS PUY-A24/30/36NHA PUY-A24/30/36NHA

PUY-A24/30/36NHA1-BS

PUZ-A42NHA PUZ-A42NHA-BS PUY-A42NHA PUY-A42NHA-BS

CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max. 100ft, 30m (A42) / Max. 70ft, 20m (A12-36))

The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerant level regardless of the length (A42: 100ft, 30m max. / A12-36: 70ft, 20m max. and 16ft, 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. It is completely eliminated by chargeless system. This unique system improves the quality and reliability of the work done. It also helps to speed up the installation time.

5 SPECIFICATIONS

Service Ref. PUZ-A18NHA PUZ-A24NHA PUZ-A30NHA PUZ-A36NHA PUZ-A42NHA Power supply Phase Single

MCA A1318252526 MOCP A 20 30 40 40 40 Breaker size A 15 25 30 30 30 External finish Munsell 3Y 7.8/1.1 Heat exchanger Plate fin coil Defrost method Reverse cycle Crankcase heater Compressor Hermetic

Fan Fan(drive) o No. Propeller fan o 1 Propeller fan o 1 Propeller fan o 1 Propeller fan o 1 Propeller fan o 2

Sound level Cooling dB 46 48 48 48 51 Protection devices

Dimension W mm 800 950 950 950 950

Weight kg 45 75 75 75 121 Refrigerant R410A

Refrigerant Pipe size OD mm 6.35 9.52 9.52 9.52 9.52 piping Liquid in. 1/4 3/8 3/8 3/8 3/8

Cycle 60Hz Voltage 208/230V

Model SNB130FPBM1 TNB220FLDM TNB220FLDM TNB220FLDM ANV33FDDMT Motor output kW 0.85 1.3 1.3 1.3 2.5

Starter type Line start Fan motor output

Fan motor Airflow m

Heating dB 47 50 50 50 55

D mm 300+23 330+30 330+30 330+30 330+30 H mm 600 943 943 943 1350 W in. 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32 D in. 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 H in. 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32

Charged kg 1.7 2.7 2.7 2.7 4.5 Control Linear expansion valve

Oil Model Ester (MEL56 Charged L 0.65 0.87 0.87 0.87 1.4

Pipe size OD mm 12.7 15.88 15.88 15.88 15.88 Gas in. 1/2 5/8 5/8 5/8 5/8 Connection method Indoor Flared Connection method Outdoor Flared Height difference m Max. 30 IU - OU ft Max. 100 Piping length m Max. 30 Max. 50 Max. 50 Max. 50 Max. 50

R.L.A. 12 12 12 12 20 L.R.A. 14 14 17.5 17.5 27.5

F.L.A.

PUZ-A18NHA-BS PUZ-A24NHA-BS PUZ-A30NHA-BS PUZ-A36NHA-BS PUZ-A42NHA-BS

/min 34 55 55 55 100

CFM 1200 1940 1940 1940 3530

lbs 99 165 165 165 267

lbs 3 + 12/16 6 6 6 10

oz 20 28 28 28 45

ft Max. 100 Max. 165 Max. 165 Max. 165 Max. 165

0.040 0.075 0.075 0.075 0.086 + 0.086

0.35 0.75 0.75 0.75 0.40 + 0.40

HP switch HP switch HP switch HP switch HP switch

Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo

LP switch

)

Service Ref. PUY-A12NHA PUY-A18NHA PUY-A24NHA PUY-A30NHA PUY-A36NHA

PUY-A42NHA

PUY-A12NHA

1 PUY-A18NHA1 PUY-A24NHA1 PUY-A30NHA1 PUY-A36NHA1

PUY-A12NHA1-BS PUY-A18NHA1-BS PUY-A24NHA1-BS PUY-A30NHA1-BS PUY-A36NHA1-BS

PUY-A42NHA-BS

Power supply

Phase Single Cycle 60Hz

Voltage 208/230V MCA A131318252526 MOCP A 15 20 30 40 40 40 Breaker size A 15 15 25 30 30 30 External finish Munsell 3Y 7.8/1.1 Heat exchanger Plate fin coil Defrost method Crankcase heater

Compressor Hermetic

Model SNB130FPBM1 SNB130FPBM1 TNB220FLDM TNB220FLDM TNB220FLDM ANV33FDDMT

Motor output kW 0.85 0.85 1.3 1.3 1.3 2.5

R.L.A. 12 12 12 12 12 20 L.R.A. 14 14 14 17.5 17.5 27.5

Starter type Line start Fan

Fan (drive) o No.

Propeller fan

1 Propeller fan

Fan motor output

0.040 0.040 0.075 0.075 0.075 0.086 + 0.086

Fan motor

F.L.A.

0.35 0.35 0.75 0.75 0.75 0.40 + 0.40

Airflow m

/min 34 34 55 55 55 100

CFM 1200 1200 1940 1940 1940 3530

Sound level Cooling dB 46 46 48 48 48 51

Heating dB – – – – – – Protection devices HP switch HP switch HP switch HP switch HP switch HP switch

LP switch

Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo

Dimension W mm 800 800 950 950 950 950

D mm 300+23 300+23 330+30 330+30 330+30 330+30

H mm 600 600 943 943 943 1350

W in. 31-1/2 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32

D in. 11-13/16 + 7/8 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16

H in. 23-5/8 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32 Weight kg 41 44 74 74 74 120

lbs 90 97 163 163 163 265

Refrigerant R410A

Charged kg 1.3 1.7 2.7 2.7 2.7 4.5

lbs 2 +14/16 3 + 12/16 6 6 6 10 Control Linear expansion valve Oil Model Ester (MEL56

)

Charged L 0.65 0.65 0.87 0.87 0.87 1.4

oz 20 20 28 28 28 45 Refrigerant Pipe size OD mm 6.35 6.35 9.52 9.52 9.52 9.52 piping Liquid in. 1/4 1/4 3/8 3/8 3/8 3/8

Pipe size OD mm 12.7 12.7 15.88 15.88 15.88 15.88 Gas in. 1/2 1/2 5/8 5/8 5/8 5/8 Connection method Indoor Flared Connection method Outdoor

Flared Height difference m Max. 30 Max. 30 Max. 30 Max. 30 Max. 30 Max. 30 IU - OU ft Max. 100 Max. 100 Max. 100 Max. 100 Max. 100 Max. 100 Piping length m Max. 30 Max. 30 Max. 50 Max. 50 Max. 50 Max. 50

ft Max. 100 Max. 100 Max. 165 Max. 165 Max. 165 Max. 165

Piping Length (one way

)

Charged

Factory

Service Ref. 50ft 60ft 70ft 80ft 90ft 100ft 110ft 120ft 130ft 140ft 150ft 160ft 165ft

15m 18m 21m 24m 27m 30m 33m 37m 40m 43m 46m 49m 50m

PUY-A12NHA

1-BS

PUY-A12NHA PUY-A12NHA

42 oz 44 oz 46 oz 48 oz 50 oz 52 oz - - - - - - - 46 oz

1.2 kg 1.2 kg 1.3 kg 1.4 kg 1.4 kg 1.5 kg - - - - - - - 1.3 kg

PUY-A18NHA

1-BS

PUY-A18NHA PUY-A18NHA

PUZ-A18NHA-BS

PUZ-A18NHA

56 oz 58 oz 60 oz 62 oz 64 oz 66 oz - - - - - - - 60 oz

1.6 kg 1.6 kg 1.7 kg 1.8 kg 1.8 kg 1.9 kg - - - - - - - 1.7 kg

PUY-A24NHA

1-BS

PUY-A24NHA PUY-A24NHA

PUZ-A24NHA-BS

PUZ-A24NHA

84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A30NHA

1-BS

PUY-A30NHA PUY-A30NHA

PUZ-A30NHA-BS

PUZ-A30NHA

84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A36NHA

1-BS

PUY-A36NHA PUY-A36NHA

PUZ-A36NHA-BS

PUZ-A36NHA

84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A42NHA-BS

PUY-A42NHA

PUZ-A42NHA-BS

PUZ-A42NHA

132 oz 136 oz 142 oz 148 oz 154 oz 160 oz 166 oz 172 oz 178 oz 184 oz 190 oz 196 oz 202 oz 160 oz

3.7 kg 3.9 kg 4.0 kg 4.2 kg 4.4 kg 4.5 kg 4.7 kg 4.9 kg 5.0 kg 5.2 kg 5.4 kg 5.6 kg 5.7 kg 4.5 kg

Longer pipe than 70 or 100 ft, additional charge is required.

PUZ-A42NHA

Service Ref.

PUZ-A42NHA-BS PUY-A42NHA PUY-A42NHA-BS

Compressor model SNB130FPBM1 TNB220FLDM ANV33FDDMT

(')

Winding Registance

U-V 0.320 0.880 0.266

U-W 0.320 0.880 0.266

W-V 0.320 0.880 0.266

(

at 20;, 68˚F

)

PUY-A12,18NHA1-BS

PUY-A12,18NHA PUY-A12,18NHA

PUZ-A18NHA-BS

PUZ-A18NHA

PUY-A24,30,36NHA

1-BS

PUY-A24,30,36NHA PUY-A24,30,36NHA

PUZ-A24,30,36NHA-BS

PUZ-A24,30,36NHA

DATA

6-1. REFILLING REFRIGERANT CHARGE (R410A : oz, kg)

6-2. COMPRESSOR TECHNICAL DATA

6-3. NOISE CRITERION CURVES

5ft

3.3ft

MICROPHONE

UNIT

GROUND

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PUY-A12/18NHA PUY-A12/18NHA1 PUY-A12/18NHA1-BS PUZ-A18NHA PUZ-A18NHA-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PUY-A24/30/36NHA PUY-A24/30/36NHA

PUY-A24/30/36NHA1-BS PUZ-A24/30/36NHA PUZ-A24/30/36NHA-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUY-A42NHA PUY-A42NHA-BS PUZ-A42NHA PUZ-A42NHA-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

6-4. STANDARD OPERATION DATA

6-4-1. Heat pump

Representative matching

PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42AA

Mode

COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING

Total Capacity BTU/h

18,000 19,000 24,000 26,000 30,000 32,000 34,200 37,000 42,000 45,000

Input W

2,240 2,130 2,650 2,570 4,400 3,660 5,030 3,610 4,820 5,070

Electrical circuit

Indoor unit model

PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42AA

Phase

Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V

Current

0.33A 0.43A 0.43A 0.52A 1.25A

Outdoor unit model

PUZ-A18NHA PUZ-A24NHA PUZ-A30NHA PUZ-A36NHA PUZ-A42NHA

Phase

Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V

Current

9.71A 9.22A 11.45A 11.09A 19.29A 15.98A 22.03A 15.66A 20.35A 21.48A

Refrigerant circuit

Discharge pressure MPa 3.14 3.38 2.85 3.03 2.99 3.50 3.22 2.95 2.85 3.28 Suction pressure MPa 0.81 0.64 0.86 0.69 0.72 0.65 0.76 0.60 0.83 0.71 Discharge temperature : 81.6 89.0 72.6 79.3 83.7 92.4 88.8 83.0 72.9 86.1 Condensing temperature : 52.0 51.6 46.8 49.6 49.1 55.9 51.5 48.0 46.8 52.3 Suction temperature : 4.8 -1.2 7.0 -0.3 1.2 -1.6 3.3 -2.0 4.6 0.1 Ref. Pipe length m 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6 Discharge pressure PSIG 455 490 414 440 434 508 467 428 414 475 Suction pressure PSIG 118 93 125 99 104 94 110 87 121 103 Discharge temperature ˚F 179 192 163 175 183 198 192 181 163 187 Condensing temperature ˚F 126 125 116 121 120 133 125 118 116 126 Suction temperature ˚F 41 30 45 31 34 29 38 28 40 32 Ref. Pipe length ft 25 25 25 25 25 25 25 25 25 25

side

Indoor

Intake air temperature DB : 26.7 21.1 26.7 21.1 26.7 21.1 26.7 21.1 26.7 21.1 Intake air temperature WB : 19.4 15.6 19.4 15.6 19.4 15.6 19.4 15.6 19.4 15.6 Discharge air temperature DB : 12.2 45.4 13.7 40.5 12.1 45.7 13.7 40.9 12.0 45.8

side

Outdoor

Intake air temperature DB : 35 8.3 35 8.3 35 8.3 35 8.3 35 8.3 Intake air temperature WB : 23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1

side

Indoor

Intake air temperature DB ˚F 80 70 80 70 80 70 80 70 80 70 Intake air temperature WB ˚F 67 60 67 60 67 60 67 60 67 60 Discharge air temperature DB ˚F 54 114 57 105 54 114 57 106 54 114

side

Outdoor

Intake air temperature DB ˚F 95 47 95 47 95 47 95 47 95 47

Intake air temperature WB ˚F 75 43 75 43 75 43 75 43 75 43 SHF 0.70 0.78 0.70 0.77 0.71 BF 0.12

– –

– – 0.10 0.11 0.11 0.09

Representative matching

PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42AA

Mode

COOLING COOLING COOLING COOLING COOLING COOLING

Total Capacity BTU/h

12,000 18,000 24,000 30,000 34,200 42,000

Input W

1,210 2,240 2,650 4,400 5,030 4,820

Electrical circuit

Indoor unit model

PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42AA

Phase

Single Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V 230V

Current

0.33A 0.33A 0.43A 0.43A 0.52A 1.25A

Outdoor unit model

PUY-A12NHA PUY-A18NHA PUY-A24NHA PUY-A30NHA PUY-A36NHA PUY-A42NHA

Phase

Single Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V 230V

Current

5.09A 9.71A 11.45A 19.29A 22.03A 20.35A

Refrigerant circuit

Discharge pressure MPa 2.99 3.14 2.85 2.99 3.22 2.85

Suction pressure MPa 1.00 0.81 0.86 0.72 0.76 0.83

Discharge temperature : 72.8 81.6 72.6 83.7 88.8 72.9

Condensing temperature : 50.7 52.0 46.8 49.1 51.5 46.8

Suction temperature : 11.1 4.8 7.0 1.2 3.3 4.6

Ref. Pipe length m 7.6 7.6 7.6 7.6 7.6 7.6

Discharge pressure PSIG 434 455 414 434 467 414

Suction pressure PSIG 145 118 125 104 110 121

Discharge temperature F 163 179 163 183 192 163

Condensing temperature F 123 126 116 120 125 116

Suction temperature F 52 41 45 34 38 40

Ref. Pipe length ft 25 25 25 25 25 25

side

Indoor

Intake air temperature DB : 26.7 26.7 26.7 26.7 26.7 26.7

Intake air temperature WB : 19.4 19.4 19.4 19.4 19.4 19.4

Discharge air temperature DB : 14.8 12.2 13.7 12.1 13.7 12.0

side

Outdoor

Intake air temperature DB : 35 35 35 35 35 35

Intake air temperature WB : 23.9 23.9 23.9 23.9 23.9 23.9

side

Indoor

Intake air temperature DB ˚F 80 80 80 80 80 80

Intake air temperature WB ˚F 67 67 67 67 67 67

Discharge air temperature DB ˚F 59 54 57 54 57 54

side

Outdoor

Intake air temperature DB ˚F 95 95 95 95 95 95

Intake air temperature WB ˚F 75 75 75 75 75 75 SHF 0.86 0.70 0.78 0.70 0.77 0.71 BF 0.09 0.12 0.10 0.11 0.11 0.09

6-4-2. Cooling only

1/2 conduit hole

144<5-21/32>

2-ø22.2<7/8>

22<7/8>

38<1-1/2>241<9-1/2>

Min.100mm<3-15/16>

Piping and wiring connection can be made from the rear direction only.

*1 In the place where short cycle tends to occur,cooling and heating capacity and power consumption might get lowered by 10%. Air outlet guide (optional PAC-SG58SG-E) will help them improve. *2 If air is discharged to the wall, the surface might get stained.

2 sides should be open in the right, left and rear side.

Min.100mm<3-15/16> as long as no obstacle is placed on the rear and light-and-left sides of the unit

*1 *2

Air intake

Air outlet

4-oval hole

Air intake

Service panel

Connection for liquid pipe

Service panel for charge plug

Service port

Connection for gas pipe

Min.100mm<3-15/16>

Min.500mm<19-11/16>

Min.350mm<13-25/32>

Basically

open

Max.

FOUNDATION

Please secure the unit firmly with 4 foundation M10<W3/8> bolts. (Bolts, washers and nut must

be purchased locally.)

18mm<23/32>

[33<1-5/16> drain hole

43.6<1-23/32>

152<6>

155

400<15-25/32>

347.5<13-11/16>

45.4<1-25/32>

365<14-3/8>

330<13>

300<11-13/16>

40<1-9/16>

Handle

600<23-5/8>

10<3/8>

300<11-13/16>

150<5-29/32>

287.5<11-11/32>

500<19-11/16>

800<31-1/2>

69<2-23/32>

183<7-7/32>

90<3-17/32>

155<6-3/32>

23<29/32>

32.5<1-9/32>

18<23/32>

FLARE [12.7<1/2F>

FLARE [6.35<1/4F>

Installation bolt pitch

PIPING-WIRING DIRECTION

Minimum installation space for outdoor unit

Free space around the outdoor unit (basic example)

FOUNDATION BOLTS

OUTLINES AND DIMENSIONS

OUTDOOR UNIT

Unit : mm<inch>

PUZ-A18NHA PUZ-A18NHA-BS PUY-A12/18NHA PUY-A12/18NHA1 PUY-A12/18NHA1-BS

PUZ-A24/30/36NHA PUZ-A24/30/36NHA-BS

,,,,

,,,,,,

,,,,,

,,,,,,

,,,,,

,,,,

,,,

,, ,

,,,

,,,,

Min. 10mm

<3/8>

Min. 10mm

<3/8>

Min. 100mm

<3-15/16>

Min. 500mm

<19-11/16>

mm<inch>

100mm

Min.

<3-15/16>

500mm

Min.

<19-11/16>

500mm

Min.

<19-11/16>

10mm

Min.

<3/8>

Service space

,,,

,,,,

,,,

Max.

30mm<1-3/16>

FOUNDATION

31<1-7/32>

74<2-19/32>

40<1-9/16>

When installing the conduit,

set the attachment to the

inner side of each panel.

1/2 Conduit attachment

[

22.2<7/8>

330 <13>

175 <6-7/8>

600 <23-5/8>

175 <6-7/8>

53 <2-3/32>

28 <1-3/32> 370 <14-9/16>

19 <3/4>

56 <2-7/32>

45 <1-25/32>

42 <1-21/32>66 <2-5/8>

417 <16-13/32>

2-U Shaped notched hole

(Foundfation Bolt M10<W3/8>)

Side Air Intake

Rear Air Intake

Air outlet

2-12*36 oval hole

(Foundation Bolt M10<W3/8>)

30 <1-3/16>

Side Air Intake

Handle

Rear piping cover

Front piping cover

81<3-3/16>

219 <8-5/8>

145

<5-23/32>

220

<8-21/32>

30 <1-3/16>

145

<5-23/32>

71 <2-13/16>

145

<5-23/32>

Bottom piping hole

(Knockout)

Drain hole

(5-

[

33<1-5/16>)

Handle

Rear Air Intake

Air Intake

670 <26-3/8>

*1 443<17-7/16>

*1 447<17-19/32>

322 <12-11/16>

950 <37-13/32>

473 <18-5/8>

943 <37-1/8>

23<29/32>

Handle

Service panel

Earth terminal

Left . . . Power supply wiring

Reight . . Indoor/Outdoor wiring

Terminal Block

63<2-1/2>

73<2-7/8>

<2-31/32>

40 <1-9/16>

92<3-5/8>

27<1-1/16>23<29/32>

55<2-3/16>

19<3/4>

Conduit hole

(2-

[

27<1-1/16>Knockout)

Right trunking hole

(Knockout)

Right piping hole

(Knockout)

[

3-5/8>

45<1-25/32>

65<2-9/16>

92<3-5/8>

40 <1-9/16>

<2-1/2>

23<29/32>

73<2-7/8>

55<2-3/16>

27<1-1/16>

Conduit hole

(2-

[

27<1-1/16>Knockout)

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

[92

<3-5/8>

40 <1-9/16>45<1-25/32>

63<2-1/2>

73<2-7/8>23<29/32

55<2-3/16>

27<1-1/16>

92<3-5/8>

65<2-9/16>

Conduit hole

(2-

[

27<1-1/16>Knockout)

Rear trunking hole

(Knockout)

Rear piping hole

(Knockout)

[

<3-5/8>

FREE

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

Dimensions of space needed

for service access are

shown in the below diagram.

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

bolts. (Bolts and washers must

be purchased locally.)

The diagram below shows a

basic example.

Explantion of particular details are

given in the installation manuals etc.

····Refrigerant GAS pipe connction (FLARE) [15.88(5/8F)

····Refrigerant LIQUID pipe connection (FLARE) [ 9.52(3/8F) *1···· Indication of STOP VALVE connection location.

Example of Notes

Piping Knockout Hole Details

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

PUY-A24/30/36NHA PUY-A24/30/36NHA1-BS PUY-A24/30/36NHA1

Unit : mm<inch>

PUZ-A42NHA PUZ-A42NHA-BS

Terminal Block

Left ··· Power supply wiring

Right ··· Indoor/Outdoor wiring

Earth terminal

Service panel

Handle

1350<53-5/32>

23<29/32>

950<37-13/32>

1076<42-3/8>

* 1 447<17-19/32>

* 1 443<17-7/16>

371<14-19/32>

635<25>

322<12-11/16>

Handle

,,,

,,,,

,,,

,,,,

,,,,,

,,,,

,,,

,,,,,

,,,,,,

,,,

,,,,,

,,,

,,,,,

,,,

Min. 1000mm

<39-3/8>

Min. 150mm

<5-29/32>

Min. 10mm

<3/8>

Min. 10mm

<3/8>

FREE

Max.

Min.

Handle

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle

Air outlet

Rear Air Intake

Side Air Intake

30mm<1-3/16>

FOUNDATION

150mm

<5-29/32>

500mm

<19-11/16>

500mm

<19-11/16>

10mm<3/8>

Service space

40<1-9/16>

74<2-19/32>

31<1-7/32>

When installing the conduit.

set the attachment to the

inner side of each panel.

[

22.2<7/8>

1/2 Conduit attachment

600<23-5/8>

175

<6-7/8>

175

<6-7/8>

330<13>

417<16-13/32>

42<1-21/32>

66<2-5/8>

53<2-3/32> 56<2-7/32>

45<1-25/32>

19<3/4>

28<1-3/32> 370<14-9/16>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

2-12*36 Oval hole

(Foundation Bolt M10<W3/8>)

30<1-3/16>

45<1-25/32>

40<1-9/16>

65<2-9/16>

92<3-5/8>

27<1-1/16>

55<2-3/16>

23<29/32> 73<2-7/8>

63<2-1/2>

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Conduit hole

(2-[27<1-1/16>Knockout)

[92

<3-5/8>

19<3/4>

55<2-3/16>

92<3-5/8>

<2-31/32>

40<1-9/16>

73<2-7/8>

63<2-1/2>

23<29/32> 27<1-1/16>

92<3-5/8>

Right piping hole

(Knockout)

Right trunking hole

(Knockout)

Conduit hole

(2-[27<1-1/16>Knockout)

[92

<3-5/8>

92<3-5/8>

65<2-9/16>

45<1-25/32>40<1-9/16>

27<1-1/16>

55<2-3/16>

23<29/32> 73<2-7/8>

<2-1/2>

Front piping hole

(Knockout)

Front trunking hole

(Knockout)

Conduit hole

(2-[27<1-1/16>Knockout)

[92

<3-5/8>

145

<5-23/32>

145

<5-23/32>

220

<8-21/32>

30<1-3/16>

145

<5-23/32>

81<3-3/16>

219<8-5/8>

71<2-13/16>

Bottom piping hole

(Knockout)

Drain hole

[

33<1-5/16>

The diagram below shows a

basic example.

Explantion of particular details are

given in the installation manuals etc.

Dimensions of space needed

for service access are

shown in the below diagram.

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

bolts. (Bolts and washers must

be purchased locally.)

1 . . .Refrigerant GAS pipe connction (FLARE) [15.88(5/8F)

2 . . .Refrigerant LIQUID pipe connection (FLARE) [ 9.52(3/8F)

*1 . . .Indication of STOP VALVE connection location.

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

Example of Notes

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping Knockout Hole Details

PUY-A42NHA PUY-A42NHA-BS

Unit : mm<inch>

WIRING DIAGRAM

PUZ-A18NHA PUZ-A18NHA-BS PUY-A12/18NHA PUY-A12/18NHA1 PUY-A12/18NHA1-BS

SYMBOL TB1 MC MF1 21S4 63H TH3 TH4 TH6 TH7 TH8 LEV-A ACL P.B.

R/S U/V/W PFC

Terminal Block<Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor

Solenoid Valve (Four-Way Valve)

High Pressure Switch Thermistor<Outdoor Pipe>

Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermistor<Heat Sink> Electronic Expansion Valve

Reactor Power Circuit Board Connection Terminal<L1/L2-Phase> Connection Terminal<U/V/W-Phase>

Converter

MF1

NAME SYMBOL NAME SYMBOL NAME

N.F.

C.B.

TH7 TH6 TH3 TH4

TH7/6 (RED)

TRANS

21 43

CNAC

(WHT)

C.B.

CNS

(WHT)

CNF1

65714

(WHT)

3 1

CNDC (PNK)

132

Power moduleIPM Main Smoothing Capacitor

CB1~CB2

Noise Filter Circuit Board Connection Terminal<L1-Phase>

LI/LO

Connection Terminal<L2-Phase>

NI/NO E

Connection Terminal<Ground> 52C Relay

52C

Controller Circuit Board

SW1

Switch<Forced defrost, Defect history record reset, Refrigerant address>

SW4

Switch<Test Operation>

SW5

Switch<Function Switch>

SW6

Switch<Model Select>

SW7

Switch<Function Setup>

SW8

Switch

SW9

Switch

43212121

TH3

TH4

(WHT)

63H

YLW)

CN2

(WHT)

567

43221

LED2

LEV-A

(WHT)

21S4

456321

LED1

21S4

(GRN)

PUZ only

SW10

Switch<Model Select>

LED1,

Light Emitting Diodes <Operation Inspection Indicators>

LED2 F1~4

Fuse<6.3 A>

SWP

Switch<Pump Down>

CN31

Connector<Emergency Operation>

CNM

Connector<A-Control Service Inspection Kit> Connector

CNMNT

<Connected to Optional M-NET Adapter Board> Connector

CNVMNT

<Connected to Optional M-NET Adapter Board> Connector

CNDM

X52

Relay

321

45321

CNVMNT

CNMNT

(WHT)

1110 12 13 14

657891234

CNM

(WHT)

CN4

CN52C

(WHT)

(RED)

X52

SW5SW8SW4 SWP

SW6SW1

CN31

CNDM

CN51

SW7

SW9SW10

(WHT)

321

54213

Optional M-NET adaptor

45321

SW1

CN5

(WHT)

LED2 LED3 LED4

M-NET SUBSTRATE

CN2M

(WHT)

LED1

LED5

TB7

ABS

M-NET

123

SW11

SW12

CND

(WHT)

N.F.

M-NET ADAPTER

SYMBOL TB7

(RED)

CN5

CN5 CND CN2M SW1 SW11 SW12 LED1 LED2 LED3 LED4 LED5

Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication> Switch<Address setting : 1st digit> Switch<Address setting : 2nd digit> LED<Power Supply : DC5V> LED<Connection to Outdoor Unit> LED<Transmission : Sending> LED<Transmission : Recelving> LED<Power Supply : DC12V>

NAME

P.B.

PFC

*1 MODEL SELECT

MODEL

PUZ-A18N

OFF

123456

PUY-A12N

OFF

123456

PUY-A18N

OFF

123456

R S

CB1 CB2

SW6

BLK

RED

WHT

U V

SW10

ON OFF

Symbols used in wiring diagram above are, : Connector, : Terminal(block).

ACL

CN5

(RED)

IPM

CN4

(WHT)

TH8

CN3

(WHT)

CN2

1672345

(WHT)

TB1

NO FUSE

BREAKER

POWER SUPPLY 208/230V 60Hz

*Use copper supply wire.

L1 GRL2

S1 S2 S3

INDOOR UNIT

CN52C

(BLK)

CNAC2

(RED)

CNAC1

(WHT)

52C

Cautions when Servicing

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 230 V). When servicing, make sure that

LED1 (green) on the outdoor circuit board goes out, and then wait for at least 1 minute. Components other than the outdoor board may be faulty: Check and take corrective action. Do not replace the outdoor board without checking.

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M SW1 SW11

Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication>

Switch<Address setting : 1st digit> SW12 LED1 LED2 LED3 LED4 LED5

Switch<Address setting : 2nd digit>

LED<Power Supply : DC5V>

LED<Connection to Outdoor Unit>

LED<Transmission : Sending>

LED<Transmission : Recelving>

LED<Power Supply : DC12V>

123456

OFF

PUZ-A24N

PUY-A24N

MODEL

SW6

*1 MODEL SELECT

SW10

OFF

123456

OFF

CN3

(WHT)

CN5

(RED)

CN2

(WHT)

CN4

(WHT)

CN52C

(BLK)

52C

TH8

1672345

N.F.

CNAC2

(RED)

CNAC1

(WHT)

(RED)

CN5

ACL

U V W

R S

PFC

CB1 CB2

IPM

P.B.

CN5

(WHT)

123

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

45321

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

ABS

CNVMNT

(WHT)

321

CNDM

(WHT)

CN51

(WHT)

IC51

321

MF1

(WHT)

54213

CNMNT

(WHT)

CNM

(WHT)

45321 LEV-A

(WHT)

LEV-A

C.B.

456321

TH7/6 (RED)

63H

(YLW)

63H

TRANS

TH3

(WHT)

CNDC (PNK)

TH4 (WHT)

TH7 TH6 TH3 TH4

43212121

SW7

SW6SW1

SW9SW10

CN31

1110 12 13 14

657891234

CN2

(WHT)

CNS

(WHT)

CNAC

(WHT)

CN4

(WHT)

21S4

(GRN)

43221

CN52C

(RED)

567

LED1

LED2

X52

52C

(BLK)

X53

132

21 43

SW5SW8SW4 SWP

21S4

SV2

(BLU)

X55

MF1

PUZ only

CB3

L1 GRL2

S1 S2 S3

INDOOR UNIT

TB1

Optional M-NET adaptor

RED

BLK

WHT

POWER SUPPLY 208/230V 60Hz

NO FUSE

BREAKER

Symbols used in wiring diagram above are, : Connector, : Terminal(block).

TB1 MC MF1

21S4 63H

TH3 TH4 TH6 TH7 TH8 LEV-A ACL

Terminal Block<Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor

C1 Fan Capacitor

Solenoid Valve (Four-Way Valve)

High Pressure Switch

SV Solenoid Valve (Bypass Valve)

Thermistor<Outdoor Pipe>

Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermistor<Heat sink> Electronic Expansion Valve

Reactor Power Circuit Board

Connection Terminal<U/V/W-Phase>

P.B.

U/V/W

Noise Filter Circuit Board Connection Terminal<L1-Phase>

Connection Terminal<Ground>

N.F.

LI/LO

Connection Terminal<L2-Phase>

NI/NO E

Fuse<6.3 A>

Controller Circuit Board Switch<Forced defrost, Defect history record reset, Refrigerant address> Switch<Test Operation> Switch<Function Switch>

Switch<Function Setup>

Switch<Pump Down> Connector<Emergency Operation>

F1~4

SW1 SW4

SW5 SW7

Switch

SW8

SWP CN31

CNM

CNVMNT

CNDM

LED1, LED2

Light Emitting Diodes <Operation Inspection Indicators>

Connector<A-Control Service Inspection Kit>

Connector <Connected to Optional M-NET Adapter Board>

Connector <Connected for Option (Contact Input)>

C.B.

Converter

PFC

52C Relay

52C

SYMBOL

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal<L1/L2-Phase>

R/S

CNMNT

Connector <Connected to Optional M-NET Adapter Board>

Switch<Model Select>

SW6

Solid State Relay<SSR>

IC51

Switch

SW9

Switch<Model Select>

SW10

X53,X52,X55

Relay

Power module

IPM

Main Smoothing CapacitorCB1~CB3

Cautions when Servicing

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 230 V). When servicing, make sure that

PUZ-A24NHA PUZ-A24NHA-BS PUY-A24NHA PUY-A24NHA1 PUY-A24NHA1-BS

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M SW1 SW11

Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication>

Switch<Address setting : 1st digit> SW12 LED1 LED2 LED3 LED4 LED5

Switch<Address setting : 2nd digit>

LED<Power Supply : DC5V>

LED<Connection to Outdoor Unit>

LED<Transmission : Sending>

LED<Transmission : Recelving>

LED<Power Supply : DC12V>

123456

OFF

PUZ-A30N

PUZ-A36N

MODEL SW6

*1 MODEL SELECT

SW10

OFF

123456

OFF

123456

OFF

PUY-A30N

PUY-A36N

OFF

123456

OFF

CN5

(WHT)

123

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

45321

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

ABS

Optional M-NET adaptor

CNVMNT

(WHT)

321

CNDM

(WHT)

CN51

(WHT)

321

54213

CNMNT

(WHT)

CNM

(WHT)

45321

LEV-A

(WHT)

LEV-A

C.B.

456321

TH7/6 (RED)

63H

(YLW)

TRANS

TH3 (WHT)

CNDC

(PNK)

TH4

(WHT)

TH7 TH6 TH3 TH4

43212121

SW7

SW6SW1

SW9SW10

CN31

1110 1213 14

657891234

CN2

(WHT)

CNS

(WHT)

CNAC

(WHT)

CN4

(WHT)

21S4

(GRN)

52C

(BLK)

432211567

LED1

LED2

X52

X55

X53

132

21 43

SW5SW8SW4 SWP

P.B.

CNDC(PNK)

~ ~

TABU

RED

BLK

WHT

TABV

TABW

TABS

TABT

TABP1

TABN2

TABN1

TABP2

432156

CN3

(WHT)

CNAF

(WHT)

4321567

CN2

(WHT)

CN4

(WHT)

CN5

(RED)

TH8

212121

21S4

(RED)

CNAC2

CN5

(RED)

(WHT)

CNAC1

N.F.

31 31

63H

123456

DCL

ACTM

N1 N2

PUZ only

IC51

MF1

(WHT)

SV2

(BLU)

MF1

POWER SUPPLY 208/230V 60Hz

INDOOR

UNIT

NO FUSE

BREAKER

L1 L2

TB1

52C

Symbols used in wiring diagram above are, : Connector, : Terminal(block).

*Use copper supply wire.

TB1 MC MF1

21S4 63H

TH3 TH4 TH6 TH7 TH8 LEV-A DCL 52C

Terminal Block<Power Supply, Indoor/Outdoor > Motor for Compressor Fan Motor

C1 Fan Capacitor

Solenoid Valve (Four-Way Valve)

High Pressure Switch

SV Solenoid Valve (Bypass Valve)

Thermistor<Outdoor Pipe>

Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermistor<Heat Sink> Electronic Expansion Valve

Reactor 52C Relay

Rush Current Protect Resistor

ACTM

Active Filter Module

Power Circuit Board Connection Terminal<U/V/W-Phase>

Diode Bridge

P.B.

TABU/V/W

Noise Filter Circuit Board Connection Lead<L1-Phase>

Connection Terminal<Ground>

N.F.

LI/LO

Connection Lead<L2-Phase>

NI/NO EI

Controller Circuit Board

Switch<Model Select> Switch<Pump Down> Connector<Emergency Operation>

Switch

SW8 SW10

SWP CN31

C.B.

DS2,3

Power ModuleIPM

SYMBOL

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal<L1/L2-Phase> Connection Terminal<DC Voltage>

TABS/T TABP1/P2

Connection Terminal<DC Voltage>

TABN1/N2

Switch

SW9

Fuse<6.3 A> Switch<Forced defrost, Defect history record reset, Refrigerant address> Switch<Test Operation> Switch<Function Switch>

Switch<Model Select>

F1~4 SW1

SW4 SW5

SW6

Switch<Function Setup>

SW7

LED1, LED2

Light Emitting Diodes <Operation Inspection Indicators>

CNM CNMNT CNVMNT CNDM

Connector<A-Control Service Inspection Kit> Connector<Connected to Optional M-NET Adapter Board> Connector<Connected to Optional M-NET Adapter Board> Connector

X52,X53,X55

Relay

IC51

Solid State Relay<SSR>

Cautions when Servicing

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 230 V). When servicing, make sure that

PUZ-A30/36NHA PUZ-A30/36NHA-BS PUY-A30/36NHA PUY-A30/36NHA1-BS PUY-A30/36NHA1

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M SW1 SW11

Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication>

Switch<Address setting : 1st digit> SW12 LED1 LED2 LED3 LED4 LED5

Switch<Address setting : 2nd digit>

LED<Power Supply : DC5V>

LED<Connection to Outdoor Unit>

LED<Transmission : Sending>

LED<Transmission : Recelving>

LED<Power Supply : DC12V>

123456

OFF

PUZ-A42N

PUY-A42N

MODEL SW6

*1 MODEL SELECT

SW10

OFF

123456

OFF

CN5

(WHT)

123

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

45321

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

ABS

Optional M-NET adaptor

CNVMNT

(WHT)

321

CNDM

(WHT)

CN51

(WHT)

321

54213

CNMNT

(WHT)

CNM

(WHT)

45321

LEV-A

(WHT)

LEV-A

C.B.

456321

TH7/6

(RED)

63H

(YLW)

TRANS

TH3

(WHT)

CNDC (PNK)

CNF1

(WHT)

CNF2

(WHT)

TH4

(WHT)

TH7 TH6 TH3 TH4

43212121

SW7

SW6SW1

SW9SW10

CN31

1110 1213 14

657891234

65714

MF1

MF2

65714

CN2

(WHT)

CNS

(WHT)

CNAC

(WHT)

CN4

(WHT)

21S4

(GRN)

52C

(BLK)

432211567

LED1

LED2

X52

X53

132

21 43

SW5SW8SW4 SWP

P.B.

CNDC(PNK)

~ ~

TABU

TABN TABP

TABV

TABW

TABS

TABT

TABP1

TABN2

TABN1

TABP2

432156

CN3

(WHT)

CNAF

(WHT)

4321567

CN2

(WHT)

CN4

(WHT)

CN5

(RED)

TH8

212121

21S4

(RED)

CNAC2

CN5

(RED)

(WHT)

CNAC1

N.F.

31 31

63L

(RED)

63H 63L

POWER SUPPLY 208/230V 60Hz

INDOOR

UNIT

NO FUSE

BREAKER

L1 L2

TB1

123456

DCL

52C

ACTM

N1 N2

PUZ only

RED

BLK

WHT

Symbols used in wiring diagram above are, : Connector, : Terminal(block).

*Use copper supply wire.

TB1 MC MF1,MF2 21S4 63H 63L TH3 TH4 TH6 TH7 TH8 LEV-A DCL 52C

Terminal Block<Power Supply, Indoor/Outdoor > Motor for Compressor Fan Motors

Solenoid Valve (Four-Way Valve)

High Pressure Switch Low Pressure Switch

Thermistor<Outdoor Pipe>

Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermistor<Heat Sink> Electronic Expansion Valve

Reactor 52C Relay

Rush Current Protect Resistor

ACTM

Active Filter Module

Main Smoothing Capacitor

Power Circuit Board Connection Terminal<U/V/W-Phase>

Diode Bridge

P.B.

TABU/V/W

Noise Filter Circuit Board Connection Lead<L1-Phase>

Connection Terminal<Ground>

N.F.

LI/LO

Connection Lead<L2-Phase>

NI/NO EI

Controller Circuit Board

Switch<Model Select> Switch<Pump Down> Connector<Emergency Operation>

SW10 SWP CN31

C.B.

DS2,3

Power ModuleIPM

SYMBOL

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal<L1/L2-Phase>

TABS/T

Connection Terminal<DC Voltage>

TABP1/P2/P

Connection Terminal<DC Voltage>

TABN1/N2/N

Switch

SW8

Switch

SW9

Fuse<6.3 A> Switch<Forced defrost, Defect history record reset, Refrigerant address> Switch<Test Operation> Switch<Function Switch>

Switch<Model Select>

F1~4 SW1

SW4 SW5

SW6

Switch<Function Setup>

SW7

LED1, LED2

Light Emitting Diodes <Operation Inspection Indicators>

CNM CNMNT CNVMNT CNDM

Connector<A-Control Service Inspection Kit> Connector<Connected to Optional M-NET Adapter Board> Connector<Connected to Optional M-NET Adapter Board> Connector< Connected for Option (Contact Input)>

X52,X53

Relay

Cautions when Servicing

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx. 2 minutes (input voltage: 230 V). When servicing, make sure that

PUZ-A42NHA PUZ-A42NHA-BS PUY-A42NHA PUY-A42NHA-BS

9-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT (A-control application)

The following connection patterns are available. The outdoor unit power supply patterns vary on models.

1:1 System Simultaneous twin system

A Outdoor unit power supply B Wiring circuit breaker or isolating switch C Outdoor unit D Indoor unit/outdoor unit connecting cords E Remote controller F Indoor unit G Indoor unit earth

S1 S2

L1 L2 GR

1 2

S1 S2 S3

S1 S2

L1 L2 GR

1 2

S1 S2 S3

1 2

S1 S2 S3

Warning:

In case of A-control wiring, there is high v oltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between po wer line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.

* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Indoor unit model

PLA-A12, 18, 24, 30

PCA, PKA

PLA-A36, 42

1A 2A

15A 15A

––

ACB

FFF

GG G

Indoor unit power supply Minimum circuit ampacity Maximum rating of overcurrent protective device

*1. Max. 50 m, 165 ft *2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max 1500 ft *3. The figures are NOT always against the ground. S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulataed by the transformer or other device.

1.Wiring size must comply with the applicable local and national code.

2.Use copper supply wires.

3.Use wires rated 300V or more for the power supply cables and the indoor/outdoor unit connecting cables.

4.Install an earth longer than other cables.

Notes:

Outdoor unit model Outdoor unit power supply Breaker size Minimum circuit ampacity Maximum rating of overcurrent protective device

Outdoor unit power supply Outdoor unit power supply earth Indoor unit-Outdoor unit *1 Indoor unit earth *1 Remote controller-Indoor unit *2 Outdoor unit L1-L2 *3 Indoor unit-Outdoor unit S1-S2 *3 Indoor unit-Outdoor unit S2-S3 *3 Remote controller-Indoor unit *3

A12 A18 A24 A30 A36 A42

Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz

15A 15A 25A 30A 30A 30A 13A 13A 18A 25A 25A 26A

15A 20A 30A 40A 40A 40A 2 o Min. AWG 14 2 o Min. AWG 14 2 o Min. AWG 12 2 o Min. AWG 10 2 o Min. AWG 10 2 o Min. AWG 10 1 o Min. AWG 14 1 o Min. AWG 14 1 o Min. AWG 12 1 o Min. AWG 10 1 o Min. AWG 10 1 o Min. AWG 10

3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar)

1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16

2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar)

AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V

DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC 12 V DC 12 V DC 12 V DC 12 V DC 12 V DC 12 V

Wiring

Wire No. o

size

Circuit

rating

A-Control

Outdoor Unit

3 poles isolator

230V

Single phase

Isolator

A-Control

Indoor Unit

WIRING SPECIFICATIONS

9-2. M-NET WIRING METHOD

Group remote controller

Refrigerant address 00

M-NET address 01

A-control remote controller

Refrigerant address 00

M-NET address 02

Refrigerant address 00

M-NET address 03

Power supply unit for transmission wire

Central remote controller

M-NET transmission wire

✕ Bad example (Multi spot grounding of shield wire)

Good example 1 (Single spot grounding of shield wire)

Power supply appliance

M-NET type outdoor unit

Central remote controller

Power supply appliance

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Central remote controller

Power supply appliance

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Good example 2 (Single spot grounding of shield wire)

(Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from

making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube.

(2) Terminal block (TB7) for transmission wires should never be connected to 208/230V power supply. If it is connected,

electronic parts on M-NET P.C. board may be burnt out.

(3) Use 2-core x 1.25mm2[AWG16] shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be

sent or received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this because this may cause a malfunction.

It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.

(4) Ground only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to

the influence of electromagnetic noise.

If there are more than two grounding spots on the shield wire, noise may enter into the shield wire because the ground wire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among grounding spots. In case of single spot grounding, noise does not enter into the shield wire because the ground wire and shield wire do not form one circuit.

To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the installation manual.

“Ed” error will appear on the LED display of outdoor unit. “0403” error will appear on the central-control remote controller.

M-NET Address No.

Switching

setting

SW11 ones digit

SW12 tens digit

OFF

Refrigerant address

OFF

System controller

A-control remote controller

Group A Group B Group C

A-control remote controller

TB5

A-control remote controller

Refrigerant address 00

M-NET address 01

Refrigerant address 00

M-NET address 02

Refrigerant address 01

M-NET address 03

Refrigerant address 00

M-NET address 04

Power supply unit for transmission wire

A-control remote controller

TB5

Group A Group B

Refrigerant address 00

M-NET address 01

Refrigerant address 01

M-NET address 02

Refrigerant address 00

M-NET address 04

Refrigerant address 01

M-NET address 03

Refrigerant address 02

M-NET address 05

System controller

Power supply unit for transmission wire

● M-NET wiring

(1) Use 2-core x 1.25mm

[AWG16] shield wire for electric wires.

(Excluding the case connecting to system controller.)

(2) Connect the wire to the M-NET terminal block. Connect one core of the

transmission wire (non-polar) to Aterminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.

(3) In the system which several outdoor units are being connected, the terminal

(A, B, S) on M-NET terminal block should be individually wired to the other

M-NET terminal block

ABS

Transmission

wire

Shield part

Ground wire

outdoor unit’s terminal, i.e. Ato A, B to B and S to S. In this case, choose one of those outdoor units and drive a screw to fix an ground wire on the plate as shown on the right figure.

9-3-1. M-NET address setting

In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI series, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as that of the indoor unit in CITY MULTI system), and the address number should be consecutively set in a same group.

Address number can be set by using rotary switches (SW11 for ones digit and SW12 for tens digit), which is located on the M-NET board of outdoor unit. (Initial setting: all addresses are set to “0”.)

9-3-2. Refrigerant address setting

In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group setting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller board. [Initial setting: all switches are OFF. (All refrigerant addresses are “00”.)]

9-3-3. Regulations in address settings

In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.

w Refrigerant addresses can be overlapped if they are in the different group.

w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As

“03” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in the group for the outdoor unit whose refrigerant address is “00”.

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8")

Refrigerant LIQUID pipe

9.52A({3/8") Stop valve (with service port)

4-way valve

Service port (check)

High pressure protect switch

Refrigerant flow in cooling Refrigerant flow in heating

Linear expansion valve

Thermistor (TH4)

Muffler

Ball valve

Bypass valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Accumulator

Stop valve (with service port)

Compressor

Refrigerant GAS pipe

12.7A({1/2")

Refrigerant LIQUID pipe

6.35A({1/4") Stop valve

4-way valve

Service port(check)

High pressure protect switch

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Muffler

Thermistor(TH4)

Linear expansion valve

Refrigerant flow in cooling Refrigerant flow in heating

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8")

Refrigerant LIQUID pipe

9.52A({3/8")

4-way valve

Service port (check)

High pressure protect switch

Linear expansion valve

Muffler

Thermistor (TH4)

Refrigerant flow in cooling Refrigerant flow in heating

Ball valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

(#100)

Low pressure protect switch

Stop valve

(with service port)

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

REFRIGERANT SYSTEM DIAGRAM

PUZ-A18NHA PUZ-A18NHA-BS

PUZ-A24/30/36NHA PUZ-A24/30/36NHA-BS

Unit : mm

<4-way valve solenoid coil>

Heating : ON Cooling : OFF

PUZ-A42NHA PUZ-A42NHA-BS

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8")

Refrigerant LIQUID pipe

9.52A({3/8")

Stop valve (with service port)

Service port (check)

High pressure protect switch

Refrigerant flow in cooling

Linear expansion valve

Thermistor (TH4)

Ball valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Bypass valve

PUY-A12/18NHA PUY-A12/18NHA1 PUY-A12/18NHA1-BS

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Service port (Check)

Accumulator

Compressor

Refrigerant GAS pipe

12.7A({1/2")

Refrigerant LIQUID pipe

6.35A({1/4") Stop valve

High pressure protect switch

Thermistor (TH4)

Linear expansion valve

Refrigerant flow in cooling

Stop valve (with service port)

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8")

Refrigerant LIQUID pipe

9.52A({3/8")

Service port (check)

High pressure protect switch

Thermistor (TH4)

Refrigerant flow in cooling

Stop valve (with service port)

Linear expansion valve

Ball valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

(#100)

Low pressure protect switch

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

PUY-A24/30/36NHA PUY-A24/30/36NHA1 PUY-A24/30/36NHA1-BS

Unit : mm

PUY-A42NHA PUY-A42NHA-BS

OFF

<SW4>

A Stop C operation B Cooling D Heating

(PUZ only)

1. Refrigerant collecting (pump down)

Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit. 1Turn on the power supply (circuit breaker).

wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If

“CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.

2After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor

(outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant collecting operation begins. LED1 and LED2 on the control board of the outdoor unit are lit. wSet the SWP switch (push-button type) to ON in order to perform refrigerant collecting operation only when the unit is

stopped. However, refrigerant collecting operation cannot be performed until compressor stops even if the unit is stopped. Wait 3 minutes until compressor stops and set the SWP switch to ON again.

3Because the unit automatically stops in about 2 to 3 minutes after the refrigerant collecting operation (LED1 is not lit

and LED2 is lit), be sure to quickly close the gas stop valve. wIn case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then

repeat step 2 3 minutes later.

wIf the refrigerant collecting operation has been completed normally (LED1 is not lit and LED2 is lit), the unit will remain

stopped until the power supply is turned off.

4Turn off the power supply (circuit breaker.)

2. Start and finish of test run

• Operation from the indoor unit

Execute the test run using the installation manual for the indoor unit.

• Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up.

1Set the operation mode (cooling/heating) using SW4-2. 2Turn on SW4-1 to start test run with the operation mode set by SW4-2. 3Turn off SW4-1 to finish the test run.

• There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product because the linear expansion pipe is just moving to adjust opening pulse.

• There may be a knocking sound around the machine room for several seconds after compressor starts operating. But this is not a problem with product because the check valve itself generates the sound because pressure difference is small in the refrigerant circuit.

Note: The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)

11 TROUBLESHOOTING

Unit conditions at service

Error code

Actions to be taken for service (summary)

The inferior phenomenon is reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “11-4. Self-diagnosis action table”.

Conduct trouble shooting and ascertain the cause of the inferior phenomenon according to “11-5. Troubleshooting by inferior phenomena”.

The inferior phenomenon is not reoccurring.

Logged

Not logged

1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the inferior phenomenon occurred, matters related to wiring and etc. 2Reset error code logs and restart the unit after finishing service. 3There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

1Re-check the abnormal symptom. 2Conduct trouble shooting and ascertain the cause of the

inferior phenomenon according to “11-5. Troubleshooting by inferior phenomena”. 3Continue to operate unit for the time being if the cause is not ascertained. 4There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

11-1. TROUBLESHOOTING

Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.

11-2. CHECK POINT UNDER TEST RUN

(1) Before test run

• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant leak-

age, loosened connections and incorrect polarity.

• Measure impedance between the ground and the power supply terminal block (L1, L2) on the outdoor unit by 500V Megger and check that it is 1.0M" or over.

wDon’t use 500V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block

(1, 2). This may cause malfunction.

• Make sure that test run switch (SW4) is set to OFF before turning on power supply.

• Turn on power supply 12 hours before test run in order to protect compressor.

• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes

of settings referring to the description of “Selection of Functions through Remote Controller”.

Make sure to read operation manual before test run. (Especially items to secure safety.)

[TEST] button

Pipe (liquid) temperature

Displays the remaining test run time.

"TEST RUN" and the currently selected operation mode are displayed altemately.

°F

Operating procedures

LCD

Contents of inferior phenomena

P1 P2 P4 P5 P6 P8 P9

Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor/Float switch connector open Drain overflow protection is working. Freezing/overheating protection is working. Abnormality of pipe temperature Abnormality of pipe temperature thermistor/Cond./Eva Abnormality of indoor controller board

LCD

Contents of inferior phenomena

U1~UP

F3~F9 E0~E5

E6~EF

----

FFFF

Malfunction outdoor unit Malfunction

outdoor unit Remote controller transmitting error Indoor/outdoor unit communication error

No error history No applied unit

LED1

(microcomputer power supply)

LED2

(remote controller)

LED3

(indoor/outdoor communication)

Lits when power is supplied. Lits when power is supplied for wired remote controller. The indoor unit should be connected to the outdoor unit with address “0” setting.

Blinks when indoor and outdoor unit are communicating.

1. Turn on the main power supply.

2. Press TEST button twice.

3. Press OPERATION SWITCH button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for correct running.

While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. w1

The TEST RUN appears on the screen. Cooling mode:

Heating mode: Check if warm air blows. (It takes a little while until warm air blows.)

Check for correct motion of auto-vanes. The outdoor unit features automatic capacity control to

provide optimum fan speeds. Therefore, the fan keeps running at a low speed to meet the current outside air condition unless it exceeds its available maximum power. Then, in actuality, the fan may stop or run in the reverse direction depending on the outside air, but this does not mean malfunction.

Check if cool air blows and water is drained.

6. Press the ON/OFF button to reset the test run in progress.

7. Register the contact number.

• In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours.

• The room temperature display section shows the pipe temperature of indoor units during the test run.

• Check that all the indoor units are running properly in case of simultaneous twin operation. Malfunctions may not be displayed regardless of incorrect wiring.

w1 After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section of

the room temperature, and lamp(green) of the remote controller will blink. As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0. LED3 will blink. As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will be lit up. (After the startup mode of the system finishes, LED2(red) will be turned off.) In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

• If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms. The below symptoms are under test run mode. “startup” in the table means the display status of w1 written above.

Remote Controller Display

Remote controller displays “PLEASE WAIT”, and

cannot be operated.

After power is turned on, “PLEASE WAIT” is displayed for 3 minutes, then error code is displayed.

No display appears even when remote controller operation switch is turned on. (Operation lamp does not light up.)

Display appears but soon disappears even when remote controller is operated.

w Press the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD

display.

Symptoms in test run mode

OUTDOOR BOARD LED Display

After “startup” is displayed, only green lights up. <00> After “startup” is displayed,

green (once) and red (once) blink alternately. <F1>

After “startup” is displayed, green (once) and red (twice)

blink alternately. <F3, F5, F9> After “startup” is displayed,

green (twice) and red (once) blink alternately. <EA. Eb>

After “startup” is displayed, only green lights up. <00>

< > indicates digital display.

Cause

• After power is turned on, “PLEASE WAIT” is displayed for 2 minutes during

system startup. (Normal)

• Incorrect connection of outdoor terminal block (L1, L2, and S1, S2, S3.)

• Outdoor unit’s safeguard installation connector is open.

• Incorrect wiring between the indoor and outdoor unit (Polarity is wrong for S1, S2, S3.)

• Remote controller transmission wire short.

• There is no outdoor unit of address 0. (Address is other than 0.)

• Remote controller transmission wire open.

• After canceling function selection, operation is not possible for about 30 seconds. (Normal)

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

TEST RUN

COOL

3,4

Test run [for wireless remote controller]

MODE

COOL

HEAT

TEST RUN

FAN

VANE

TEST RUN

Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M".

1 Turn on the main power to the unit. 2 Press the button twice continuously.

(Start this operation from the turned off status of remote controller display.)

and current operation mode are displayed.

3 Press the ( ) button to activate mode, then

check whether cool air is blown out from the unit.

4 Press the ( ) button to activate mode, then

check whether warm air is blown out from the unit.

5 Press the button and check whether strong air is blown out

from the unit.

6 Press the button and check whether the auto vane operates

properly.

7 Press the ON/OFF button to stop the test run.

Note:

• Point the remote controller towards the indoor unit receiver while following steps

• It is not possible to run in FAN, DRY or AUTO mode.

to 77.

11-3. HOW TO PROCEED "SELF-DIAGNOSIS"

11-3-1. When a Problem Occurs During Operation

If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display.

[CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit number are displayed alternately as shown below.

1 (If the outdoor unit is malfunctioning, the unit number will be "00".) 2 In the case of group control, for which remote controller controls

multiple refrigerant systems, the refrigerant address and error code of the unit that first experienced trouble (i.e., the unit that transmitted the error code) will be displayed.

3 To clear the error code, press the

button.

When using remote-/local-controller combined operation, cancel the error code after turning off remote operation. During central control by a MELANS controller, cancel the error code by pressing the

button.

11-3-2. Self-Diagnosis During Maintenance or Service

Since each unit has a function that stores error codes, the latest check code can be recalled even if it is cancelled by the remote controller or power is shut off.

Check the error code history for each unit using the remote controller.

Switch to self-diagnosis mode.

Press the

button twice within 3 seconds. The display content

will change as shown below.

Set the unit number or refrigerant address you want to diagnose.

Press the [TEMP] buttons ( and ) to select the desired number or address. The number (address) changes between [01] and [50] or [00]

Display self-diagnosis results. <When there is error code history> (For the definition of each error code, refer to the indoor unit's installation manual or service handbook.)

Reset the error history. Display the error history in the diagnosis result display screen (see step

Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

The refrigerant address will begin to blink approximately 3 seconds after being selected and the self-diagnosis process will begin.

Unit number or refrigerant address to be diagnosed

Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

and

[15].

ON/OFF

CHECK

D Press the

ON/OFF

button twice within 3 seconds. The self-diagnosis

address or refrigerant address will blink.

When the error history is reset, the display will look like the one shown below. However, if you fail to reset the error history, the error content will be displayed again.

5 Cancel self-diagnosis.

Self-diagnosis can be cancelled by the following 2 methods.

H Press the

button twice within 3 seconds. ➔ Self-diagnosis will be cancelled and the screen will return to the previous state in effect before the start

of self-diagnosis.

5 Press the

button. ➔ Self-diagnosis will be cancelled and the indoor unit will stop.

11-3-3. Remote Controller Diagnosis

If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below.

1 First, check that the power-on indicator is lit.

If the correct voltage (DC12 V) is not supplied to the remote controller, the

indicator will not light.

If this occurs, check the remote controller's wiring and the indoor unit.

2 Switch to the remote controller self-diagnosis mode.

H Press the

button for 5 seconds or more. The display content will

change as shown below.

A Press the

button to start self-diagnosis.

3 Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

Check for other possible causes, as there is no problem with the remote

controller.

[When the remote controller malfunctions] (Error display 1) "NG" blinks. ➝ The remote controller's transmitting-receiv-

ing circuit is defective.

The remote controller must be replaced with a new one.

[Where the remote controller is not defective, but cannot be operated.]

(Error display 2) [E3], [6833] or [6832] blinks.

➝ Transmission is not possible.

There might be noise or interference on the transmission path, or the indoor unit

or other remote controllers are defective. Check the transmission path and other

controllers.

(Error display 3)

"ERC" and the number of data errors are displayed.

➝ Data error has occurred.

The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmission path. If such a problem is occurring, the transmitted data is affected by noise, etc. Check the transmission path.

4 To cancel remote controller diagnosis

H Press the

button for 5 seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will blink. After

approximately 30 seconds, the state in effect before the diagnosis will be restored.

Power on indicator

CHECK

ON/OFF

CHECK

FILTER

When the number of data errors is "02": Transmission data from remote controller Transmission data on transmission path

CHECK

+ 106 hidden pages

Mitsubishi PUZ-A24NHA, PUZ-A24NHA-BS, PUZ-A30NHA, PUZ-A18NHA-BS, PUZ-A30NHA-BS Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual